Dioxyde de Titane

Origin

Titanium dioxide (TiO2) is an inorganic compound derived from the naturally occurring mineral ilmenite, rutile, and anatase. It exists in several crystalline forms, with rutile being the most stable and commonly used. The production process involves extracting titanium from these ores and refining it to a high purity level. It is widely used in various industries due to its high refractive index, brightness, and UV resistance.

Usage

In the food industry, titanium dioxide is primarily used as a whitening agent or colorant. It enhances the brightness and opacity of food products, improving their visual appeal. It can be found in a wide range of foods, including confectionery (candies, chewing gum), baked goods, dairy products (certain cheeses, creamers), sauces, and processed snacks. It is also used in food contact materials, such as packaging, to provide a white background for printing and labeling.

Side Effects

The safety of titanium dioxide as a food additive has been a subject of debate. The European Food Safety Authority (EFSA) concluded in 2021 that E171 is no longer considered safe as a food additive due to concerns about genotoxicity. Specifically, they could not rule out concerns after intake of titanium dioxide particles. Other regulatory bodies, such as the FDA, still permit its use under specific conditions. Potential health concerns revolve around the accumulation of nanoparticles in the body and their potential impact on the immune system and DNA. No ADI has been established, as EFSA could not establish a safe level.

Regulatory Status

In the European Union, the use of titanium dioxide (E171) as a food additive has been banned since 2022. Other countries, including the UK, are reviewing its safety. The FDA in the United States still permits its use as a color additive in food, provided it adheres to specific purity and usage level requirements outlined in the Code of Federal Regulations (CFR). The regulatory landscape is evolving, and manufacturers are increasingly seeking alternatives to titanium dioxide.